package com.mmall.service.impl;

import com.google.common.collect.Lists;
import com.mmall.service.IFileService;
import com.mmall.util.FTPUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.util.UUID;

/**
 * @author sunqy
 * @create 2019/6/25
 */
@Service("IileService")
public class FileServiceImpl implements IFileService {

    private Logger logger = LoggerFactory.getLogger(FileServiceImpl.class);

    /**
     * 上传文件到ftp服务器
     * @param file
     * @param path
     * @return
     */
    public String upload(MultipartFile file, String path){
        String fileName =  file.getOriginalFilename();
        //扩展名
        String fileExtensionName = fileName.substring(fileName.lastIndexOf(".")+1);
        String uploadName = UUID.randomUUID().toString()+"."+fileExtensionName;
        logger.info("开始上传文件，上传文件的文件名：{}，上传的路径：{}，原文件名：{}",fileName,path,uploadName);

        File fileDir = new File(path);
        if (!fileDir.exists()){
            fileDir.setWritable(true);
            fileDir.mkdirs();
        }
        File targetFile = new File(path, uploadName);

        try {
            file.transferTo(targetFile);
            //文件已经上传成功了

            FTPUtil.uploadFile(Lists.<File>newArrayList(targetFile));
            //已经上传到ftp服务器

            targetFile.delete();
        } catch (IOException e) {
            logger.error("上传文件异常", e);
            return null;
        }
        return targetFile.getName();
    }
}
